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|
package define
import (
"fmt"
"strings"
)
const (
// HealthCheckHealthy describes a healthy container
HealthCheckHealthy string = "healthy"
// HealthCheckUnhealthy describes an unhealthy container
HealthCheckUnhealthy string = "unhealthy"
// HealthCheckStarting describes the time between when the container starts
// and the start-period (time allowed for the container to start and application
// to be running) expires.
HealthCheckStarting string = "starting"
)
// HealthCheckStatus represents the current state of a container
type HealthCheckStatus int
const (
// HealthCheckSuccess means the health worked
HealthCheckSuccess HealthCheckStatus = iota
// HealthCheckFailure means the health ran and failed
HealthCheckFailure HealthCheckStatus = iota
// HealthCheckContainerStopped means the health check cannot
// be run because the container is stopped
HealthCheckContainerStopped HealthCheckStatus = iota
// HealthCheckContainerNotFound means the container could
// not be found in local store
HealthCheckContainerNotFound HealthCheckStatus = iota
// HealthCheckNotDefined means the container has no health
// check defined in it
HealthCheckNotDefined HealthCheckStatus = iota
// HealthCheckInternalError means some something failed obtaining or running
// a given health check
HealthCheckInternalError HealthCheckStatus = iota
// HealthCheckDefined means the healthcheck was found on the container
HealthCheckDefined HealthCheckStatus = iota
)
// Healthcheck defaults. These are used both in the cli as well in
// libpod and were moved from cmd/podman/common
const (
// DefaultHealthCheckInterval default value
DefaultHealthCheckInterval = "30s"
// DefaultHealthCheckRetries default value
DefaultHealthCheckRetries uint = 3
// DefaultHealthCheckStartPeriod default value
DefaultHealthCheckStartPeriod = "0s"
// DefaultHealthCheckTimeout default value
DefaultHealthCheckTimeout = "30s"
)
// HealthConfig.Test options
const (
// HealthConfigTestNone disables healthcheck
HealthConfigTestNone = "NONE"
// HealthConfigTestCmd execs arguments directly
HealthConfigTestCmd = "CMD"
// HealthConfigTestCmdShell runs commands with the system's default shell
HealthConfigTestCmdShell = "CMD-SHELL"
)
// HealthCheckOnFailureAction defines how Podman reacts when a container's health
// status turns unhealthy.
type HealthCheckOnFailureAction int
// Healthcheck on-failure actions.
const (
// HealthCheckOnFailureActionNonce instructs Podman to not react on an unhealthy status.
HealthCheckOnFailureActionNone = iota // Must be first iota for backwards compatibility
// HealthCheckOnFailureActionInvalid denotes an invalid on-failure policy.
HealthCheckOnFailureActionInvalid = iota
// HealthCheckOnFailureActionNonce instructs Podman to kill the container on an unhealthy status.
HealthCheckOnFailureActionKill = iota
// HealthCheckOnFailureActionNonce instructs Podman to restart the container on an unhealthy status.
HealthCheckOnFailureActionRestart = iota
// HealthCheckOnFailureActionNonce instructs Podman to stop the container on an unhealthy status.
HealthCheckOnFailureActionStop = iota
)
// String representations for on-failure actions.
const (
strHealthCheckOnFailureActionNone = "none"
strHealthCheckOnFailureActionInvalid = "invalid"
strHealthCheckOnFailureActionKill = "kill"
strHealthCheckOnFailureActionRestart = "restart"
strHealthCheckOnFailureActionStop = "stop"
)
// SupportedHealthCheckOnFailureActions lists all supported healthcheck restart policies.
var SupportedHealthCheckOnFailureActions = []string{
strHealthCheckOnFailureActionNone,
strHealthCheckOnFailureActionKill,
strHealthCheckOnFailureActionRestart,
strHealthCheckOnFailureActionStop,
}
// String returns the string representation of the HealthCheckOnFailureAction.
func (h HealthCheckOnFailureAction) String() string {
switch h {
case HealthCheckOnFailureActionNone:
return strHealthCheckOnFailureActionNone
case HealthCheckOnFailureActionKill:
return strHealthCheckOnFailureActionKill
case HealthCheckOnFailureActionRestart:
return strHealthCheckOnFailureActionRestart
case HealthCheckOnFailureActionStop:
return strHealthCheckOnFailureActionStop
default:
return strHealthCheckOnFailureActionInvalid
}
}
// ParseHealthCheckOnFailureAction parses the specified string into a HealthCheckOnFailureAction.
// An error is returned for an invalid input.
func ParseHealthCheckOnFailureAction(s string) (HealthCheckOnFailureAction, error) {
switch s {
case "", strHealthCheckOnFailureActionNone:
return HealthCheckOnFailureActionNone, nil
case strHealthCheckOnFailureActionKill:
return HealthCheckOnFailureActionKill, nil
case strHealthCheckOnFailureActionRestart:
return HealthCheckOnFailureActionRestart, nil
case strHealthCheckOnFailureActionStop:
return HealthCheckOnFailureActionStop, nil
default:
err := fmt.Errorf("invalid on-failure action %q for health check: supported actions are %s", s, strings.Join(SupportedHealthCheckOnFailureActions, ","))
return HealthCheckOnFailureActionInvalid, err
}
}
|
